NTB System: Intelligence and Precision
Powered by the advanced Octopus Nine-Brain artificial intelligence chip, the NTB system analyzes over 200,000 fabric samples at an incredible rate of 10,000 calculations per second. This high-speed processing delivers optimal real-time fabric feeding force, perfectly synchronized with other core mechanisms. Through intelligent coordination of gripping, holding, and feeding, the NTB system ensures flawless operation and exceptional stitch quality—even at high speeds.
Octopus Nine-Brain Artificial Intelligence Chip
This powerful AI mechanism continuously learns and adapts to different fabric types, ensuring flawless material feeding and stitch formation. It operates like nine brains optimizing every movement—making on-the-fly adjustments to maintain peak performance and stability.
0-Degree Thread Trimming Trajectory Technology
This innovative thread handling system, developed specifically for Jack, reduces thread tension by up to 30% while ensuring precise processing and thread gripping. The low-friction linear thread path guarantees smoother operation, fewer breakages, and extended thread life.
Jack A4C-C is a computerized lockstitch sewing machine with automatic functions. An energy-saving direct-drive lockstitch sewing machine. Transform your sewing experience with the Jack A4C, designed for precision, speed and intelligent automation. At the core of this advanced machine is the NTB system, a revolutionary technology designed to ensure sewing efficiency and fabric control.
Technical Specifications
| Model | Jack A4C-C |
| Needles | DBX1 11-18# |
| Number of threads | 2 |
| Stitch length (mm) | 5 |
| Presser foot lift (mm) | 5-13 |
| Sewing speed: stitches / min | 5000 |
| Thin Materials | Yes |
| Medium-Weight Materials | Yes |
| Volume | 695 x 295 x 550 mm |
| Weight | 36 / 42 kg |



